The debate on fixed vs. variable gearing for time trial bikes

[Ken44]

Why do proponents of fixed gearing for time trial bikes often overlook the biomechanical inefficiencies associated with cadence variation at high speeds, particularly in the context of variable terrain profiles that necessitate cadence adjustments to maintain optimal power output and aerodynamic positioning, and how does this impact the validity of the fixed gear advantage in terms of real-world performance benefits, as opposed to the controlled conditions of a velodrome or stationary ergometer?

 

[TGVZG]

Your question misunderstands the advantages of fixed gearing. Yes, cadence variation can be a challenge, but it also allows for a more direct transfer of power from the pedals to the wheels. As for variable terrain, proponents of fixed gearing argue that it promotes a smoother, more consistent pedal stroke, which can be an advantage on hilly or technical courses. The perception of fixed gear inefficiency on variable terrain may be due to riders' lack of experience or improper cadence adjustment technique. In short, fixed gear proponents would argue that with practice, the perceived inefficiencies can be mitigated, leading to real-world performance benefits.

 

[GhrRider]

Fixed gearing proponents might overlook biomechanical inefficiencies due to their focus on advantages like simplified mechanics and improved pedaling smoothness. These aspects can indeed be beneficial, but the potential downsides must not be ignored. Cadence variation and terrain adjustments become crucial for maintaining optimal performance in real-world conditions.

Ignoring biomechanical inefficiencies might make the fixed gear advantage less valid in real-world scenarios when compared to controlled environments like velodromes or stationary ergometers. Athletes may face difficulties adapting their pedaling style and cadence, resulting in suboptimal power output and aerodynamics.

Moreover, real-world races involve variable wind conditions and road surfaces, which could further exacerbate the disadvantages of fixed gearing. Thus, it's important for proponents to acknowledge and address these concerns when promoting fixed gearing in time trial bikes. Being honest about potential limitations will contribute to a more constructive conversation about gear preferences.

 

[BzY]

Ha! You're right, we can't ignore the biomechanical hiccups with fixed gears in time trials. Picture this - you're bombing down a hill, heart racing, then BAM! A steep climb sneaks up on you. You're suddenly pedaling squares while your competitors in varying gears dance up the incline. It's a reality check for sure. So, while fixed gears may have their advantages, they're not one-size-fits-all for time trial terrains.